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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2011-09-20 11:09:32 +0200 |
|---|---|---|
| committer | Vincent Guittot <vincent.guittot@linaro.org> | 2011-11-14 11:10:07 +0100 |
| commit | 64ed398797f236ed708828e672dff130854e9d3b (patch) | |
| tree | d27f38d31b1ed9d029751e0394d8d754baba03a9 | |
| parent | 93a4dc80b8b9140076a016a56fc93a27abba8845 (diff) | |
| download | vexpress-a9-64ed398797f236ed708828e672dff130854e9d3b.tar.gz | |
ARM: cpu topology: Add asym topology flag for using cpu0 1st
Modify the CPU sched_domain flags in powersave mode for using the cpu0 in ched_mc powersave mode
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
| -rw-r--r-- | arch/arm/include/asm/topology.h | 33 | ||||
| -rw-r--r-- | arch/arm/kernel/topology.c | 11 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index 58b8b84adcd..f7f02e392ef 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -34,6 +34,39 @@ static inline void store_cpu_topology(unsigned int cpuid) { } #endif +/* Common values for CPUs */ +#ifndef SD_CPU_INIT +#define SD_CPU_INIT (struct sched_domain) { \ + .min_interval = 1, \ + .max_interval = 4, \ + .busy_factor = 64, \ + .imbalance_pct = 125, \ + .cache_nice_tries = 1, \ + .busy_idx = 2, \ + .idle_idx = 1, \ + .newidle_idx = 0, \ + .wake_idx = 0, \ + .forkexec_idx = 0, \ + \ + .flags = 1*SD_LOAD_BALANCE \ + | 1*SD_BALANCE_NEWIDLE \ + | 1*SD_BALANCE_EXEC \ + | 1*SD_BALANCE_FORK \ + | 0*SD_BALANCE_WAKE \ + | 1*SD_WAKE_AFFINE \ + | 0*SD_PREFER_LOCAL \ + | 0*SD_SHARE_CPUPOWER \ + | 0*SD_SHARE_PKG_RESOURCES \ + | 0*SD_SERIALIZE \ + | arch_sd_sibling_asym_packing() \ + | sd_balance_for_package_power() \ + | sd_power_saving_flags() \ + , \ + .last_balance = jiffies, \ + .balance_interval = 1, \ +} +#endif + #include <asm-generic/topology.h> #endif /* _ASM_ARM_TOPOLOGY_H */ diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index a1b1f7f95ec..945b9802ad6 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -227,6 +227,17 @@ unsigned long arch_scale_freq_power(struct sched_domain *sd, int cpu) } /* + * sched_domain flag configuration + */ +/* TODO add a config flag for this function */ +int arch_sd_sibling_asym_packing(void) +{ + if (sched_smt_power_savings || sched_mc_power_savings) + return SD_ASYM_PACKING; + return 0; +} + +/* * default topology function */ |